Update v4/examples/twilio-voice-agent.mdx

Co-authored-by: Jonathan Irwin <[email protected]>

v4/examples/twilio-voice-agent.mdx

@@ -16,7 +16,7 @@ If you don’t have a Cerebrium account, you can create one by signing up [here]
 
 In your IDE, run the following command to create our Cerebrium starter project: `cerebrium init twilio-agent`. This creates two files:
 
-- **Main.py** - Our entrypoint file where our code lives
+- **main.py** - Our entrypoint file where our code lives
 - **cerebrium.toml** - A configuration file that contains all our build and environment settings
   ‍
   Add the following pip packages near the bottom of your cerebrium.toml. This will be used in creating our deployment environment.